Compression packing ring and valve



C. P. HOLLISTER.

COMPRESSION PACKING RING AND VALVE.

APPLICATION FILED IIIIY 2 191v r .w m a wm HT n ,u e J/QA w 5 mm 1 8 d2 M I P CLARENCE P. HOLLISTEI t, OF NEW YORK, N. Y.

COMPRESSION PACKING-RING AND VALVE.

Application filed July 2,

whom it may concern:

Be it-known that LCLAnnNo-n P. HoLLIs- Tnu, a citizen of the United States, residing at New York, in the county of New York and State of New York, have invented certain new and useful Improvements in Compression Packing-Rings and Valves, of which the following is a specification.

My invention relates; to packing rings which are more especially adapted for use ,in connection with revoluble sleeve valves of internal combustion engines.

The main object of my invention is to provide an expansion packing ring for maintaining the proper compression in the combustion chamber and preventing the leakage of gas during the explosion and the compression strokes of the piston, possessing the self-cleaning feature of the split ring inremoving any carbon or other deposits which may accumulate at the edges of the ports, but with the further advantage that the ring is not completely severed .and may be provided with a plurality oi slots extending partially across the ring, each of which is closed at one end.

In the accompanying drawings, Figure 1 is a vertical sectional view through the cylinder of an internal combustion engine showing an embodiment of my invention; Fig. 2 is -a side elevation, partly broken away, of the sleeve valve and compression ring shown in Fig. 1; Fig. 3 is a transverse section on the line of Fig. 1; Fig. this an enlarged fragmentary section on the line 23 of Fig. 1; Figs. 4 and 5, are perspective views of the compression shell showing dit'- tercnt ways of cutting the slots "in the shell; and Fig. 6 is a developed diagram showing a modified arrangement of the slots. 1

The engine cylinder 1,-which may be provided with the usual jacket 2, to provide a passage 3 for the circulation of cooling water, is bolted to a base 5 constitutingthe The revoluble sleeve valve 10" rests upon a bearing ring 12, carried by a crank case.

web 14, cxtendingdnwardly from the upper part of the crank case.

The sleeve valve may be rotated at a speed proportionate to the speed of the crank shaft in any suitable manner, as by means of a chain 1:), connecting a sprocket wheel 16 keyed to the crank shaft 17, and:

Specification of Letters Patent.

Patented Dec. 14, 1920.

1917. Serial m. 178,089.

sprocket 18 on the countershaft 19, which carries a worm 2O meshing with the gear teeth 21 on the sleeve valve.

The lubrication of the valve is maintained in the crankcase, whichjthrows the oil upwardly against the interior walls of the sleeve 10 at each reciirocationof the piston 25. A portion of th through the apertures 26 into the spiral groove 27 and is carried upwardly by the action of the spiral groove during the rotation of the sleeve over the inner wall of the cylinetl'ected -by the splash of the crank 23 in the oil 0 oil passes 1 OFFICE.

der 1, thereby maintaining a film of oil be- -v tween the surfaces of-the sleeve and cyl vinder.

The cylinder head 30 projects within the cylinder below the ports and is provided with passages 3l-and'32 registering respectively with the intake port 34:1and the outlet port 35. The rotary valve is provided with ports 36,37 which register alternatelywith the "intake and exhaust ports. In order to prevent the gases from passing around the upper edge of the valve shell into the ports during compression and when explode ha compression shell .40 is disposed between the valve casing and the cylinder, the upper end of the valve casinghaving a reduced.

diameter to prtwide an annular recess therefor. The compression shell ispro\ ided with openings 41, 42 in register with the valve ports and is secured to the valve in any suitable manner, as by means of pins 43.v

The gases under compression amlexplosion are also prevented by ,the compression shell from passing downwardly between the valve casing and the. cylinder wall which is essential to the maintenance of the film of lubricating' oil therebetween.

It has heretofore been ploy a compression shell which is split or cut entirely across.

proposed to em I have found thatl can retain the advantages of a .spli t shell.- or cylinder, while obviating certain of its defects and obtain other advantages by employing an integral shell havinga plurality of slots extending partially across from opposite edges.

In Figs. 2 '50, 50. extending diagonally and in Figs 5 ,parallelto the axis or perpendicular to-the and 4, have shown 1 05 edges of the shell. These oppositely ext ding parallel slots permit the shell to be com pressed sutficiently to be inserted-into the engine cylinder and aiterward expand into a tight contact with the cylinder wall. The

slot 50 extends ilownwawlly-fro n the upper edge of the shell and is closed at its lower end so. that no gas can escape between the' would pass downwardly between the walls of the valve sleeve and the cylinder, following also the sp1ralgroow2l, and thereby driving out the film of lubricating 011. To

prevent the downward escape of gas in this manner, I closethe lower end of the slot 50. I insert a. small closure member 53 in a slot or recess extendii'ig transversely across the slot. To still further provide against any passage of gases downwardly between the valve cylinder and the shell which might escape under the compression shell, I may provide one or more expansion rings 04,

' seated in a groove or annular recess in the valve.

In Figs. 2, 3 and 4, I have shown the slots arranged at only one small SCl' 1()n ol? the ring, the remainder of the ring being unslotted. This makes the ring verv staunch -and stitfand the elasticity of themetal throughout the whole of the unslotted portion resists any tendency to compression. or in other words, nearly the whole of the ring exerts its elasticity to force the ring out against the inner periphery of the cylinder. In Fig. 6 I have shown another form in which i the partial slots are placed upon either side of the ports. Here also only a very small proportion of theperipheral wall of the ring is slotted, substantially two thirds of the metal being unslotted as will be observed by reference to the cross-sectional view, Fig. 3.

The operation and function of the compression shell will be understood from the above detailed description. It is secured by pins 43, or in other suitable manner, to the valve cylinder and rotates with it, fitting tightly against the cylinder wall and effectually preventing anyescape of gases during compression and explosion. The slots 50, 50 in the compression shell not only permit the expansion of the shell against the cylinder 'wall, but during the rotation of the shell the edges of the slots scrape away any carbon depositsor other foreign matter from the margins of the ports. I

am thus enabled to combine with the means forpreventing leakage a self-cleaning feature \VlllClI cflectually prevents any accumulation of deposits with the attendant loss.

of efliciency and stoppage for cleaning and repairs. It is evident also that this greatly reduces the wear of the moving parts and prolongs the life of the machine. I have illustrated "several modifications but it will be apparent to engineers that other cl'ianges and variations may be made within the scope of my claims.

I claim 1. In an internal combustion engine,

revoluble compression or packing ring, comprising an integral cylindrical shell having a series oi ports formed therein, and a y l ing portion formed by a plurality of 5 extending partially thereacross from oppw site edges. the major portion of the ring being unslotted. I

2. In an internal combustion engine, a compression or packing ring, comprising an integral cylindrical shell having a series of ports formed. therein. a plurality of slotsextending partially thereacross, one of said slots extending from one edge and another slot extending from the opposite edge, and a closure member seated in a recess or aperture in the shell extending transversely of the slot which extends from the lower edge of the shell, to thereby prevent the escape of gases downwardly therethrough.

3. In an internal combustion engine, a compression or packing ring, comprising an integral cylindrical shell having a series of ports formed therein, and a slot upon each side of one of said ports, the ring being otherwise unslotted, said slots extending from opposite edges of the shell partially thereacross.

i.- .In an internal combustion engine, a

compression or packing ring, comprising an extending transversely of the slots which extend from the lower edge of the shell.

5. In an internal combustion engine, com-- prising a cylinder having inlet and outlet ports, a revoluble sleeve valve disposed in said cylinder and provided with openings to register alternately with said port-1 and a compression shell surrounding the upper' end of said sleeve valve andrevelabie therewith and having openings in alinement With said openings therein, said shellbeing an integral cylinder and having a plurality of slots extending from opposite edges thereof to form a yielding portion, the major porfaion of the ring being nnslotted.

6. In an internal combustion engine, comprising a cylinder having inlet and outlet ports, a revol'uble sleeve valve disposed in said cylinder and provided with openings to register alternately with said ports, a compression shell surrounding the upper end of said sleeve valve and having openings in alinement with said openings therein, said shell being anintegral cylinder and having a plurality of slots extending from opposite edges thereof, closure members seated in reeesses orapertures in the shell extending 

